This is something that comes up periodically. It is ironic that Scofield can no longer be "trusted".
He Lives: Fundy Irony: "So, back to the fundy churchs that demand fealty to both dispensationalism and YEC-ism.
What about the hero of dispensationalism, the undisputed heavyweight champion, C. I. Scofield? He needn't apply. Maybe the Methodists will take him. Why?
Because C. I. Scofield was an Old Earth Creationist.
It is interesting--dispensationalism is the only systematic theology developed in the scientific era. As such, Scofield was well aware of fact that geology teaches us that the earth is old. So he embedded a particular form of OEC into his notes: the gap theory. He taught of an unknowable (from scripture, at least) long period of time between the first verse of the bible and the second. When he picks it up in the second verse he sounds like a YEC--he taught literal 24-hour days and even included Bishop Usher's calculations (with the dreaded 4004 BC result) in his original notes. So many people think was a YEC. But he wasn't."